Do nothing and let the law tell you where it is. This means that
if you don't do anything to structure ownership of a work, as
soon as the work is created ownership will be established according
to law and the owner may not be who you think it is or who it
should be.

Applying the Law
Applying the law can be complicated. The law considers who authored
the work and whether the work was prepared for an employer. If more
than one author is involved, it becomes necessary to consider how
those involved intended for their work to be merged.

It is also necessary to consider any contracts or other obligations
related to the creation of the work, and whether the work incorporates
existing copyright material.